抄録
Arterial oxygen saturation (SpO2) is a non-invasive indicator used to assess the oxygen-carrying capacity of
the blood and is widely utilized in conditions such as respiratory failure and hypoxemia. Conventional
measurement sites, such as the fingertip and earlobe, have limitations, and nasal measurement has recently
gained attention. This study compared the response speed and signal stability between nasal, fingertip, and
earlobe measurements using the latest Nasal Alar SpO2 sensor. The nasal measurement demonstrated stable perfusion index (PI) values and rapid response, proving to be useful even in low perfusion states.
